blob: 9162d1b6c0a348f9a6d028bf7c7eef9df0261240 [file] [log] [blame]
Anatolij Gustschin126512e2010-09-28 20:55:20 +02001/*
2 * Setup platform devices needed by the Freescale multi-port host
3 * and/or dual-role USB controller modules based on the description
4 * in flat device tree.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 */
11
12#include <linux/kernel.h>
13#include <linux/platform_device.h>
14#include <linux/fsl_devices.h>
15#include <linux/err.h>
16#include <linux/io.h>
17#include <linux/of_platform.h>
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +020018#include <linux/clk.h>
Paul Gortmaker6eb0de82011-07-03 16:09:31 -040019#include <linux/module.h>
Anatolij Gustschin126512e2010-09-28 20:55:20 +020020
21struct fsl_usb2_dev_data {
22 char *dr_mode; /* controller mode */
23 char *drivers[3]; /* drivers to instantiate for this mode */
24 enum fsl_usb2_operating_modes op_mode; /* operating mode */
25};
26
Sachin Kamat660479a2013-09-16 16:33:52 +053027static struct fsl_usb2_dev_data dr_mode_data[] = {
Anatolij Gustschin126512e2010-09-28 20:55:20 +020028 {
29 .dr_mode = "host",
30 .drivers = { "fsl-ehci", NULL, NULL, },
31 .op_mode = FSL_USB2_DR_HOST,
32 },
33 {
34 .dr_mode = "otg",
35 .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
36 .op_mode = FSL_USB2_DR_OTG,
37 },
38 {
39 .dr_mode = "peripheral",
40 .drivers = { "fsl-usb2-udc", NULL, NULL, },
41 .op_mode = FSL_USB2_DR_DEVICE,
42 },
43};
44
Sachin Kamat660479a2013-09-16 16:33:52 +053045static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np)
Anatolij Gustschin126512e2010-09-28 20:55:20 +020046{
47 const unsigned char *prop;
48 int i;
49
50 prop = of_get_property(np, "dr_mode", NULL);
51 if (prop) {
52 for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
53 if (!strcmp(prop, dr_mode_data[i].dr_mode))
54 return &dr_mode_data[i];
55 }
56 }
57 pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
58 np->full_name);
59 return &dr_mode_data[0]; /* mode not specified, use host */
60}
61
Bill Pemberton41ac7b32012-11-19 13:21:48 -050062static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
Anatolij Gustschin126512e2010-09-28 20:55:20 +020063{
64 if (!phy_type)
65 return FSL_USB2_PHY_NONE;
66 if (!strcasecmp(phy_type, "ulpi"))
67 return FSL_USB2_PHY_ULPI;
68 if (!strcasecmp(phy_type, "utmi"))
69 return FSL_USB2_PHY_UTMI;
70 if (!strcasecmp(phy_type, "utmi_wide"))
71 return FSL_USB2_PHY_UTMI_WIDE;
72 if (!strcasecmp(phy_type, "serial"))
73 return FSL_USB2_PHY_SERIAL;
74
75 return FSL_USB2_PHY_NONE;
76}
77
Sachin Kamat660479a2013-09-16 16:33:52 +053078static struct platform_device *fsl_usb2_device_register(
Anatolij Gustschin126512e2010-09-28 20:55:20 +020079 struct platform_device *ofdev,
80 struct fsl_usb2_platform_data *pdata,
81 const char *name, int id)
82{
83 struct platform_device *pdev;
84 const struct resource *res = ofdev->resource;
85 unsigned int num = ofdev->num_resources;
86 int retval;
87
88 pdev = platform_device_alloc(name, id);
89 if (!pdev) {
90 retval = -ENOMEM;
91 goto error;
92 }
93
94 pdev->dev.parent = &ofdev->dev;
95
96 pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
Anatolij Gustschin126512e2010-09-28 20:55:20 +020097 *pdev->dev.dma_mask = *ofdev->dev.dma_mask;
98
99 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
100 if (retval)
101 goto error;
102
103 if (num) {
104 retval = platform_device_add_resources(pdev, res, num);
105 if (retval)
106 goto error;
107 }
108
109 retval = platform_device_add(pdev);
110 if (retval)
111 goto error;
112
113 return pdev;
114
115error:
116 platform_device_put(pdev);
117 return ERR_PTR(retval);
118}
119
120static const struct of_device_id fsl_usb2_mph_dr_of_match[];
121
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530122static int usb_get_ver_info(struct device_node *np)
123{
124 int ver = -1;
125
126 /*
127 * returns 1 for usb controller version 1.6
128 * returns 2 for usb controller version 2.2
129 * returns 0 otherwise
130 */
131 if (of_device_is_compatible(np, "fsl-usb2-dr")) {
132 if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6"))
133 ver = FSL_USB_VER_1_6;
134 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2"))
135 ver = FSL_USB_VER_2_2;
Ramneek Mehreshe98b6a42012-09-19 14:18:45 +0530136 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
137 ver = FSL_USB_VER_2_4;
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530138 else /* for previous controller versions */
139 ver = FSL_USB_VER_OLD;
140
141 if (ver > -1)
142 return ver;
143 }
144
Anatolij Gustschin7c1029b2012-12-04 14:23:21 +0100145 if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr"))
146 return FSL_USB_VER_OLD;
147
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530148 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
149 if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6"))
150 ver = FSL_USB_VER_1_6;
151 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
152 ver = FSL_USB_VER_2_2;
153 else /* for previous controller versions */
154 ver = FSL_USB_VER_OLD;
155 }
156
157 return ver;
158}
159
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500160static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200161{
162 struct device_node *np = ofdev->dev.of_node;
163 struct platform_device *usb_dev;
164 struct fsl_usb2_platform_data data, *pdata;
165 struct fsl_usb2_dev_data *dev_data;
166 const struct of_device_id *match;
167 const unsigned char *prop;
168 static unsigned int idx;
169 int i;
170
171 if (!of_device_is_available(np))
172 return -ENODEV;
173
174 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
175 if (!match)
176 return -ENODEV;
177
178 pdata = &data;
179 if (match->data)
180 memcpy(pdata, match->data, sizeof(data));
181 else
182 memset(pdata, 0, sizeof(data));
183
184 dev_data = get_dr_mode_data(np);
185
186 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
187 if (of_get_property(np, "port0", NULL))
188 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
189
190 if (of_get_property(np, "port1", NULL))
191 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
192
193 pdata->operating_mode = FSL_USB2_MPH_HOST;
194 } else {
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200195 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
196 pdata->invert_drvvbus = 1;
197
198 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
199 pdata->invert_pwr_fault = 1;
200
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200201 /* setup mode selected in the device tree */
202 pdata->operating_mode = dev_data->op_mode;
203 }
204
205 prop = of_get_property(np, "phy_type", NULL);
206 pdata->phy_mode = determine_usb_phy(prop);
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530207 pdata->controller_ver = usb_get_ver_info(np);
208
209 if (pdata->have_sysif_regs) {
210 if (pdata->controller_ver < 0) {
211 dev_warn(&ofdev->dev, "Could not get controller version\n");
212 return -ENODEV;
213 }
214 }
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200215
216 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
217 if (!dev_data->drivers[i])
218 continue;
219 usb_dev = fsl_usb2_device_register(ofdev, pdata,
220 dev_data->drivers[i], idx);
221 if (IS_ERR(usb_dev)) {
222 dev_err(&ofdev->dev, "Can't register usb device\n");
223 return PTR_ERR(usb_dev);
224 }
225 }
226 idx++;
227 return 0;
228}
229
Bill Pembertonfb4e98a2012-11-19 13:26:20 -0500230static int __unregister_subdev(struct device *dev, void *d)
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200231{
232 platform_device_unregister(to_platform_device(dev));
233 return 0;
234}
235
Bill Pembertonfb4e98a2012-11-19 13:26:20 -0500236static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200237{
238 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
239 return 0;
240}
241
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200242#ifdef CONFIG_PPC_MPC512x
243
244#define USBGENCTRL 0x200 /* NOTE: big endian */
245#define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
246#define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
247#define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
248#define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
249#define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
250#define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
251
252#define ISIPHYCTRL 0x204 /* NOTE: big endian */
253#define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
254#define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
255#define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
256#define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
257#define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
258
259int fsl_usb2_mpc5121_init(struct platform_device *pdev)
260{
Jingoo Hand4f09e22013-07-30 19:59:40 +0900261 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200262 struct clk *clk;
Gerhard Sittig7282bdb2013-07-19 14:18:31 +0200263 int err;
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200264
Gerhard Sittigd77276c2013-11-30 23:51:31 +0100265 clk = devm_clk_get(pdev->dev.parent, "ipg");
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200266 if (IS_ERR(clk)) {
267 dev_err(&pdev->dev, "failed to get clk\n");
268 return PTR_ERR(clk);
269 }
Gerhard Sittig7282bdb2013-07-19 14:18:31 +0200270 err = clk_prepare_enable(clk);
271 if (err) {
272 dev_err(&pdev->dev, "failed to enable clk\n");
273 return err;
274 }
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200275 pdata->clk = clk;
276
277 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
278 u32 reg = 0;
279
280 if (pdata->invert_drvvbus)
281 reg |= GC_PPP;
282
283 if (pdata->invert_pwr_fault)
284 reg |= GC_PFP;
285
286 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
287 out_be32(pdata->regs + USBGENCTRL, reg);
288 }
289 return 0;
290}
291
292static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
293{
Jingoo Hand4f09e22013-07-30 19:59:40 +0900294 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200295
296 pdata->regs = NULL;
297
Gerhard Sittig7282bdb2013-07-19 14:18:31 +0200298 if (pdata->clk)
299 clk_disable_unprepare(pdata->clk);
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200300}
301
Peter Tysercc604dd2011-01-10 17:34:14 -0600302static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200303 .big_endian_desc = 1,
304 .big_endian_mmio = 1,
305 .es = 1,
Peter Tysercc604dd2011-01-10 17:34:14 -0600306 .have_sysif_regs = 0,
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200307 .le_setup_buf = 1,
308 .init = fsl_usb2_mpc5121_init,
309 .exit = fsl_usb2_mpc5121_exit,
310};
311#endif /* CONFIG_PPC_MPC512x */
312
Peter Tysercc604dd2011-01-10 17:34:14 -0600313static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
314 .have_sysif_regs = 1,
315};
316
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200317static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
Peter Tysercc604dd2011-01-10 17:34:14 -0600318 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
319 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200320#ifdef CONFIG_PPC_MPC512x
321 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
322#endif
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200323 {},
324};
325
326static struct platform_driver fsl_usb2_mph_dr_driver = {
327 .driver = {
328 .name = "fsl-usb2-mph-dr",
329 .owner = THIS_MODULE,
330 .of_match_table = fsl_usb2_mph_dr_of_match,
331 },
332 .probe = fsl_usb2_mph_dr_of_probe,
Bill Pemberton76904172012-11-19 13:21:08 -0500333 .remove = fsl_usb2_mph_dr_of_remove,
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200334};
335
Axel Lincc27c962011-11-27 20:16:27 +0800336module_platform_driver(fsl_usb2_mph_dr_driver);
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200337
338MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
339MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
340MODULE_LICENSE("GPL");